Abstract: The present invention provides a method of treating Alzheimer's disease using a compound of Formula (I). Also provided is a method of inhibiting the aggregation of amyloid proteins using a compound of the Formula (I) and a method of imaging amyloid deposits, as well as new compounds of Formula (I).

Abstract: The present invention provides a method of treating Alzheimer's disease using a compound of Formula I 1

Abstract: Disclosed are compounds of the Formula I 1

Abstract: Disclosed are compounds of the Formula I 1

Abstract: Neuroprotective agents based on inhibition of kainic acid neurotoxicity and compounds useful as neuroprotective agents based on inhibition of kainic acid neurotoxicity. An inhibitors of kainic acid neurotoxicity, comprising as an active ingredient a pyridothiazine derivative represented by the following general formula (I) or a pharmaceutically acceptable salt thereof, and a pyridothiazine derivative represented by the following general formula (I) or a pharmaceutically acceptable salt thereof: ##STR1## wherein symbols in the formula have the following respective meanings: the ring A: a pyridine ring; ##STR2## R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 may be the same or different and each represent a hydrogen atom or a lower alkyl, cycloalkyl, alkenyl, aryl, carboxyl or lower alkoxycarbonyl group which may have substituent(s), or are not present, with the proviso that R.sup.2 and R.sup.

Abstract: Diurea derivatives are provided which can be represented by the following general formula and salts thereof: ##STR1## wherein, R.sup.1 and R.sup.2 are the same or different, and each represents C.sup.1 -10 alkyl group, a C.sup.3 -18 cycloalkyl group, or a lower alkyl group substituted by cycloalkyl radical(s);R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are the same or different, and each represents a hydrogen atom, a lower alkyl group, a cycloalkyl group, hydrocarbyl aralkyl group, a pyridyl group, or an unsubstituted or substituted phenyl group, the substituents of the phenyl group being selected from a group consisting of lower alkyl radical, halogen atom-substituted lower alkyl radical, halogen atom, nitro radical, amino radical, mono- or di-lower alkylamino radical, lower acylamino radical, hydroxyl radical, lower alkoxy radical and lower acyloxy radical;X represents an oxygen atom or a sulfur atom, and n.sup.1 and n.sup.2 represent an integer of 1 to 6; and wherein at least one of R.sup.3 -R.sup.

Abstract: Diurea derivatives are provided which can be represented by the following general formula and salts thereof: ##STR1## Illustrative derivatives include 1,3-bis[[1-cycloheptyl-3-(3-pyridyl)ureido]-methyl]benzene, 1,3-bis[[1-cycloheptyl-3-(2-pyridyl)ureido]-methyl]benzene, and 1,3-bis[[1-cycloheptyl-3-(4-pyridyl)ureido]-methyl]benzene.The above compounds inhibit acyl-coenzyme A cholesterol acyltransferase (ACAT enzyme), and thereby control the accumulation of cholesterol ester to the smooth muscle of arterial wall in the blood vessel.

Abstract: Diurea Derivatives represented by the following general formula and salts thereof: ##STR1## The above compounds inhibit acyl-coenzyme A chloresterol acyl-transferase (ACAT enzyme), and thereby control the accumulation of cholesterol ester to the smooth muscle of arterial wall in the blood vessel.

Abstract: Diurea derivatives are provided which are represented by the following general formula and salts thereof: ##STR1## The above compounds inhibit acyl-coenzyme A cholesterol acyl-transferase (ACAT enzyme), and thereby control the accumulation of cholesterol ester on the smooth muscle of arterial wall in the blood vessels.